Improvement in sheet-metal roofing



W. G. HYNDMAN. Shevet-'Metaloofing No. 210,613. Patented Dec. 10,1878.

y y vit-572219,

UNITED STATES PATENT OEEIoE.

WILLIAM Gr. HYNDMAN, OF CINCINNATI, OHIO.

IMPROVEMENT VIN SHEET-METAL ROOFING.

Specification forming part of Letters Patent No. 210,613, dated December l0, 1878; application filed November i1, 187e.

To alt whom t may concern:

Be it known that I, WrLLrAM G. HYNDMAN, of Cincinnati, in the county of Hamilton and State of Ohio, have invented a new and valuable Improvement in Sheet-Metal Roofing; and I do hereby declare that the following is a full, clear, and exact description of the construction and operation of the same, reference being had to the annexed drawings, making a part of this specification, and to the letters and iigures of reference marked thereon.

Figure 1 of the drawings is a representa-tion of a perspective. view ofthe sheet before it is stamped, with the anchors connected thereto. Fi g. 2 is a similar view of the sheet and anchors ready for packing. Fig. 3 is an end view of the plate and anchor.

This invention has relation to sheet-metal roon g-plates 5 and consists, in the metal plate and cap formed from one and the same sheet of metal, of an anchor or anchors secured thereto by rivets, solder, or other suitable means, as will be hereinafter described.

In the accompanying drawings, A represents the .roofing-plate, of any suitable metal, to which are secured, by rivets, solder, or in any other suitable manner, anchors B, which may be done before the rooting-sheet is bent into form for attaching to the roof. After the anchors are thus secured to the sheet, the sheet and the anchors are bent by suitable tools or implements in the form as illustrated in Fig. 2 of the drawings, for convenience of packing and transportation.

The edge of the sheet A, upon the side to which the anchors are secured, is turned at an angle to form a cap, C, which is afterward turned down upon and over the edge of the adjoining plate after being placed upon the roof, thereby forming the roofing-sheet' and cap from one and the same piece of metal, and greatly facilitating the manufacture of the same, as well as saving time and labor in securing the plates upon the roof.

The great difficulty heretofore experienced in formin g the anchor from the same sheet of metal that formed the rooting-sheet and cap was the care with which they had to be con nected to the roof, and as the anchor runs the entire length of the sheet the contraction and expansion of the metal would be unequal, and tend to loosen the nails which secure the anchors to the roof and, further, where the anchor is one continuous piece running the entire width of the sheet, it is extremely difficult to secure the anchor to a roof having an uneven or not perfectly fiat surface.

By securing the anchors to the plate and having them of the ordinary width theabove difficulties are removed, as the plates and anchors can. be secured to the roof, however uneven, and the anchorsbeing independent of each other allow of contraction and expansion without danger of loosening the nails, and one very essential and important feature is the economy of metal resulting from securingthe anchors to the sheet in place of forming them from the same sheet of metal which forms the roofing-sheet and cap. A

Having now fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

A sheet-metal roofing-plate and cap formed from one and the same piece of metal, and an anchor riveted` or soldered thereto, substantially as and for the purpose speciiied.

In testimony that I claim the above I have hereunto subscribed my name in the presence of two witnesses.

WILLIAM Gr'. HYNDMAN.

Vitnesses:

R. J. HYNDMAN, JAMEs LovE. 

